Volume 5 No. 1Supra Sword Loudspeaker CableMartic Colloms tries a high end speaker cable from a long established Swedish source.
Review By Martin Colloms

This high end cable from Swedish maker Jenving gave promising results when it was tried out as bi- wire jumpers with the Rogers Royal LS3/5a revival (Vol3 No3), and now 6m speaker cable samples have been received for checking in the main system. Described as a
skin effect controlled-Litz construction, with clockwise and counter clockwise windings, the substantial conductors are combined in a heavy duty figure-8 jacket. All was well terminated in solid looking gold-on-copper spades (other connectors are available).

The conductors are formed around an insulating polyethylene core, supporting an inner group of twelve counter-clockwise oxygen free copper Litz conductors; an intervening jacket is then followed by the outer group of twelve, wound clockwise. This design should give very low skin effects and thus superior high frequency performance, especially for longer cables. The test bench for a 5m reference length gave a very low loop resistance of 0.089 Ohm, a negligible 320pF of capacitance with a very low loss factor of 0.05 even at 10 kHz. The loop inductance was also low at 2.83uH, confirming the design objective.

This cable delivered a lively crisp sound with notably solid and extended bass, fine focus, fairly good image depth and width, plus good detail and resolution. At times its lively but informative treble could make it sound just slightly larger than life, but basically it's satisfactorily neutral. Whereas many similar looking cables sound bland and lacking in musical commitment and detail, this Supra example delivered a respectable score of 65 marks, and therefore qualifies for recommendation. £1075 per 5m terminated pair